Product Description
Industry heavy duty injection molding POM-C Derlin Acetal plastic flexible transmission convey leaf chain
POM (Polyformaldehyde)
POM (Full-name: Polyformaldehyde), is a engineering plastics of non-side-chain, high density, high crystalline and linear polymer, which is praised “Plastic Steel”, and has comprehensive excellent performances, such as: wear-resistance, high hardness, anti-impregnant, good rigidity (Tensile modulus of elasticity), chemical stability, isolation resistance and dimensional stability. POM has widely applied in Automobile industries, electronic and electric products, commodity, pipeline & fittings, exact apparatus and so on, which can be instead of the bronze, Zinc, tin and other metals.
Except POM-H, is often copolymerized with ethylene oxide together, in order to avoid the melting of POM material in the high temperature. POM-H has the better performances than POM-C in its high crystalline, mechanical strength and rigidity. And POM-C has the better performances than POM-H in its low melting point, temperature stability, fluxion characteristic and machining capability.
Father more, POM-H+PTFE, which is made from the Delrin POM Resin that maxed Teflon fiber symmetrically, has the low co-efficient of frication, good lubrication, wear-resistance, non-creepage resistance.
Automobile industries: POM has a large application in car industries, because the mechanical parts made by POM, which has the advantages of high mechanical strength, high hardness, good wear-resistance, low co-efficient of friction, easy to maintain, reducing cost and so on, can be used in cars instead of coppery half stalk and planet gear. It not only saving copper materials, but also improving service life. At the engine fuel system, components for hose valves and case cover of radiator, cooling fluid’s standby case, water valve, oil box’ cover, pump impeller, shell of gasification machine and accelerator pedal and so on.
Electronic and electric Industries: because of its lower power consuming, high dielectric strength and insulation resistance and electronic arc resistance, POM has widely applied in electronic and electric Industries, such as: shell of electronic spanner, shell of electronic scissors, shell of coal drilling machine ,handle of switch, parts also for phone, wireless recorder, video tape recorder, television, computer, electrograph, calculagraph, bracket of recorder tape and so on.
Agricultural machine: part of manual sprayer, joint and transport part of seeder, parts of milk machine, shell of irrigation and drainage, valve, joint and bush of water and so on.
Other field:
Pharmacy & packing Machine: transporting screw, planet gear, gear bar, chain wheel and cushion bar and so on.
Construction industries: water tap, window frame, wash pot, water tank, pulley for portiere, shell of water meter and tie-in of water pipe.
Color:White,Black,Natural,Rice Yellow brown and so on.
Size:1000X2000X(Thickness:1-200mm),1220X2440X(Thickness:1-200mm)
600X1200X(Thickness:1-200mm)
Data Sheet of POM
| Property | Item No. | Unit | POM-C | POM-H | POM-H+PTFE | |
| Mechanical Properties | 1 | Density | g/cm3 | 1.41 | 1.43 | 1.50 |
| 2 | Water absorption(23ºC in air) | % | 0.20 | 0.20 | 0.17 | |
| 3 | Tensile strength | MPa | 68 | 78 | 55 | |
| 4 | Tensile strain at break | % | 35 | 35 | 10 | |
| 5 | Compressive stress(at 2%nominal strain) | MPa | 35 | 40 | 37 | |
| 6 | Charpy impact strength (unnotched) | KJ/m2 | ≥150 | ≥200 | ≥30 | |
| 7 | Charpy impact strength (notched) | KJ/m2 | 7 | 10 | 3 | |
| 8 | Tensile modulus of elasticity | MPa | 3100 | 3600 | 3200 | |
| 9 | Ball indentation hardness | N/mm2 | 140 | 160 | 140 | |
| 10 | Rockwell hardness | – | M84 | M88 | M84 | |
| Material: | Plastic |
|---|---|
| Structure: | Leaf Chain |
| Surface Treatment: | Polishing |
| Chain Size: | 1/2"*3/32" |
| Feature: | Fire Resistant, Heat Resistant |
| Shape: | Sheet\Board\Rod\Plate\Rod\Bar\Strips\Shaped Parts |
| Samples: |
US$ 1/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How do leaf chains perform in dusty or dirty environments?
Leaf chains are designed to perform well in dusty or dirty environments, thanks to their robust construction and self-lubricating capabilities. In such conditions, chain components are exposed to various contaminants like dust, dirt, and debris, which can potentially affect the chain’s performance if not adequately addressed.
One of the key features that make leaf chains suitable for these environments is their simple yet durable design. With fewer moving parts and components, there are fewer areas for dirt and debris to accumulate, reducing the risk of chain jamming or clogging. The link plates of leaf chains are typically sealed to prevent contaminants from entering the pin and bushing joints, reducing wear and prolonging the chain’s life.
Leaf chains often incorporate self-lubricating properties, such as oil-impregnated sintered bushings or sealed pins, which help to maintain proper lubrication even in dusty conditions. This self-lubrication minimizes friction between the chain components, reducing wear and ensuring smooth operation, even in dirty environments.
However, it is essential to perform regular inspections and maintenance to keep the leaf chains in optimal condition. Cleaning the chains and removing any accumulated dirt or debris, along with proper lubrication, will help extend their service life and maintain their performance in dusty or dirty environments.
In summary, leaf chains are well-suited for use in dusty or dirty environments due to their simple and robust design, self-lubricating capabilities, and resistance to chain jamming or clogging. Proper maintenance is crucial to ensuring their reliable performance in such conditions.
What are the safety certifications and standards for leaf chains?
Leaf chains used in lifting and rigging applications are subject to various safety certifications and standards to ensure their reliability and performance. Some of the common safety certifications and standards that apply to leaf chains include:
- ISO 4347: This standard specifies the requirements and test methods for leaf chains for general lifting applications. It covers dimensions, strength, and performance characteristics to ensure safe usage.
- ASME B29.8: The American Society of Mechanical Engineers (ASME) standard B29.8 covers leaf chains, including design, dimensions, and minimum performance requirements for leaf chains used in industrial applications.
- EN 818: European Norm (EN) 818 defines the safety requirements for various types of lifting chains, including leaf chains, used in the European Union.
- DIN 8152: Deutsches Institut für Normung (DIN) standard 8152 outlines the design and construction requirements for leaf chains used in lifting and materials handling.
- CE Certification: Leaf chains, like other lifting equipment, may require CE certification to indicate compliance with European safety directives.
When selecting leaf chains for specific lifting applications, it is essential to ensure that they meet the necessary safety certifications and standards. Using certified leaf chains helps ensure the safety of lifting operations, reduces the risk of accidents, and provides confidence in the reliability and performance of the equipment.
editor by CX 2023-11-29